Continue to Site

Eng-Tips is the largest engineering community on the Internet

Intelligent Work Forums for Engineering Professionals

  • Congratulations cowski on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

Recent content by MJW

  1. MJW

    damper energy dissipation

    Thanks for your help. It isnt actually a vibrating system; it's more an energy dissipation mechanism before an end stop; a buffer if you like. Energy dissipated is therefore simply 1/2 cvL, where v=initial velocity, L=length of cushion and c is the damping coefficient. This assumes a zero final...
  2. MJW

    damper energy dissipation

    Hi, I hope you can help. I need to know what the energy dissipated by a damper in a single stroke is? It seems a simple, and obvious question but I am tying myself in knots with it! Please put me out of my misery. F=c*velocity, E=integral(0 to Length)F.dx? F=c*Length*acceleration? Aaargh...
  3. MJW

    bearing classification

    Is there an international system for bearing classification? I am trying to identify some needle roller bearings in an assembly as part of my degree studies. I presume that a manufacturer would buy in bearings rather than make them in house, and I presume that these bearings are made to set...
  4. MJW

    Exaustpipe

    World Rally Cars inject fuel into the exhaust before the turbo. The fuel detonates and keeps the turbo spinning; this prevents turbo 'lag' and improves engine response. Maybe this is what you mean. It's certainly not road legal, or even recommended though!

Part and Inventory Search